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E,or e,is the fifth letter and the second vowel letter of the Latin alphabet,used in the modern English alphabet,the alphabets of other western European languages and others worldwide. Its name in English is e;plural es,Es or E's.
E-commerce is the activity of electronically buying or selling products on online services or over the Internet. E-commerce draws on technologies such as mobile commerce,electronic funds transfer,supply chain management,Internet marketing,online transaction processing,electronic data interchange (EDI),inventory management systems,and automated data collection systems. E-commerce is the largest sector of the electronics industry and is in turn driven by the technological advances of the semiconductor industry.
The number e is a mathematical constant approximately equal to 2.71828 that is the base of the natural logarithm and exponential function. It is sometimes called Euler's number,after the Swiss mathematician Leonhard Euler,though this can invite confusion with Euler numbers,or with Euler's constant,a different constant typically denoted . Alternatively,e can be called Napier's constant after John Napier. The Swiss mathematician Jacob Bernoulli discovered the constant while studying compound interest.
The International Phonetic Alphabet (IPA) is an alphabetic system of phonetic notation based primarily on the Latin script. It was devised by the International Phonetic Association in the late 19th century as a standard written representation for the sounds of speech. The IPA is used by lexicographers,foreign language students and teachers,linguists,speech–language pathologists,singers,actors,constructed language creators,and translators.
In geography,latitude is a coordinate that specifies the north–south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from −90°at the south pole to 90°at the north pole,with 0°at the Equator. Lines of constant latitude,or parallels,run east–west as circles parallel to the equator. Latitude and longitude are used together as a coordinate pair to specify a location on the surface of the Earth.
Robert Edward Lee was a Confederate general during the American Civil War,toward the end of which he was appointed the overall commander of the Confederate States Army. He led the Army of Northern Virginia—the Confederacy's most powerful army—from 1862 until its surrender in 1865,earning a reputation as a skilled tactician.
In probability theory and statistics,variance is the expected value of the squared deviation from the mean of a random variable. The standard deviation (SD) is obtained as the square root of the variance. Variance is a measure of dispersion,meaning it is a measure of how far a set of numbers is spread out from their average value. It is the second central moment of a distribution,and the covariance of the random variable with itself,and it is often represented by ,,,,or .
Escherichia coli ( ESH-ə-RIK-ee-əKOH-lye) is a gram-negative,facultative anaerobic,rod-shaped,coliform bacterium of the genus Escherichia that is commonly found in the lower intestine of warm-blooded organisms. Most E. coli strains are harmless,but some serotypes such as EPEC and ETEC are pathogenic and can cause serious food poisoning in their hosts,and are occasionally responsible for food contamination incidents that prompt product recalls. Most strains are part of the normal microbiota of the gut and are harmless or even beneficial to humans (although these strains tend to be less studied than the pathogenic ones). For example,some strains of E. coli benefit their hosts by producing vitamin K2 or by preventing the colonization of the intestine by pathogenic bacteria. These mutually beneficial relationships between E. coli and humans are a type of mutualistic biological relationship —where both the humans and the E. coli are benefitting each other. E. coli is expelled into the environment within fecal matter. The bacterium grows massively in fresh fecal matter under aerobic conditions for three days,but its numbers decline slowly afterwards.
Eucalyptus is a genus of more than 700 species of flowering plants in the family Myrtaceae. Most species of Eucalyptus are trees,often mallees,and a few are shrubs. Along with several other genera in the tribe Eucalypteae,including Corymbia and Angophora,they are commonly known as eucalypts or "gum trees". Plants in the genus Eucalyptus have bark that is either smooth,fibrous,hard,or stringy and leaves that have oil glands. The sepals and petals are fused to form a "cap" or operculum over the stamens,hence the name from Greek eû ("well") and kaluptós ("covered"). The fruit is a woody capsule commonly referred to as a "gumnut".
In physics,engineering and mathematics,the Fourier transform (FT) is an integral transform that takes a function as input and outputs another function that describes the extent to which various frequencies are present in the original function. The output of the transform is a complex-valued function of frequency. The term Fourier transform refers to both this complex-valued function and the mathematical operation. When a distinction needs to be made,the output of the operation is sometimes called the frequency domain representation of the original function. The Fourier transform is analogous to decomposing the sound of a musical chord into the intensities of its constituent pitches.
A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object,an action on mathematical objects,a relation between mathematical objects,or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various types,many symbols are needed for expressing all mathematics.
Wile E. Coyote and the Road Runner are a duo of cartoon characters from the Looney Tunes and Merrie Melodies series of animated cartoons,first appearing in 1949 in the theatrical short Fast and Furry-ous. In each episode,the cunning,devious and constantly hungry coyote repeatedly attempts to catch and eat the roadrunner,but is humorously unsuccessful. Instead of using animal instinct,the coyote deploys absurdly complex contraptions to try to catch his prey. They comically backfire,with the coyote often getting injured in slapstick fashion. Many of the items for these contrivances are mail-ordered from a variety of companies implied to be part of the Acme Corporation. TV Guide included Wile E. Coyote in its 2013 list of "The 60 Nastiest Villains of All Time".
eBay Inc. is an American multinational e-commerce company based in San Jose,California,that allows users to buy or view items via retail sales through online marketplaces and websites in 190 markets worldwide. Sales occur either via online auctions or "buy it now" instant sales,and the company charges commissions to sellers upon sales. eBay was founded by Pierre Omidyar in September 1995. It has 132 million yearly active buyers worldwide and handled $73 billion in transactions in 2023,48% of which was in the United States. In 2023,the company had a take rate of 13.81%.
Eric Lynn Wright,known professionally as Eazy-E,was an American rapper who propelled West Coast rap and gangsta rap by leading the group N.W.A and its label,Ruthless Records. He is often referred to as the "Godfather of Gangsta Rap".
In physics,mass–energy equivalence is the relationship between mass and energy in a system's rest frame,where the two quantities differ only by a multiplicative constant and the units of measurement. The principle is described by the physicist Albert Einstein's formula: . In a reference frame where the system is moving,its relativistic energy and relativistic mass obey the same formula.
WALL-E is a 2008 American animated romantic science fiction film produced by Pixar Animation Studios for Walt Disney Pictures. The film was directed by Andrew Stanton,produced by Jim Morris,and written by Stanton and Jim Reardon. It stars the voices of Ben Burtt,Elissa Knight,Jeff Garlin,John Ratzenberger,Kathy Najimy,and Sigourney Weaver,with Fred Willard in a live-action role. The film follows a solitary robot named WALL·E on a future,uninhabitable,deserted Earth in 2805,left to clean up garbage. He is visited by a robot called EVE sent from the starship Axiom,with whom he falls in love and pursues across the galaxy.
An electronic cigarette (e-cigarette),or vape,is a device that simulates tobacco smoking. It consists of an atomizer,a power source such as a battery,and a container such as a cartridge or tank. Instead of smoke,the user inhales vapor. As such,using an e-cigarette is often called "vaping". The atomizer is a heating element that vaporizes a liquid solution called e-liquid,which quickly cools into an aerosol of tiny droplets,vapor and air. The vapor mainly comprises propylene glycol and/or glycerin,usually with nicotine and flavoring. Its exact composition varies,and depends on several things including user behavior.
Amazon Kindle is a series of e-readers designed and marketed by Amazon. Amazon Kindle devices enable users to browse,buy,download,and read e-books,newspapers,magazines,Audible audiobooks,and other digital media via wireless networking to the Kindle Store. The hardware platform,which Amazon subsidiary Lab126 developed,began as a single device in 2007. Currently,it comprises a range of devices,including e-readers with E Ink electronic paper displays and Kindle applications on all major computing platforms. All Kindle devices integrate with Windows and macOS file systems and Kindle Store content and,as of March 2018,the store had over six million e-books available in the United States.
In probability theory and statistics,the Poisson distribution is a discrete probability distribution that expresses the probability of a given number of events occurring in a fixed interval of time if these events occur with a known constant mean rate and independently of the time since the last event. It can also be used for the number of events in other types of intervals than time,and in dimension greater than 1.
An ebook,also spelled as e-book or eBook,is a book publication made available in electronic form,consisting of text,images,or both,readable on the flat-panel display of computers or other electronic devices. Although sometimes defined as "an electronic version of a printed book",some e-books exist without a printed equivalent. E-books can be read on dedicated e-reader devices,also on any computer device that features a controllable viewing screen,including desktop computers,laptops,tablets and smartphones.
References
- ↑ "Guide Parlementaire Canadien". 1976.
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